| U.S. Presidents Quiz | 0 | - | 5.00 | 3,203,183 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 169,015 |
| U.S. Vice Presidents | 0 | - | 4.41 | 120,973 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 82,523 |
| U.S. Presidential Trivia #2 | 0 | - | 4.52 | 40,219 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,614 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,682 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,886 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 355,366 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,955 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,290 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,981 |
| First Ladies of the United States | 0 | - | 4.27 | 80,344 |
| Presidential Middle Names | 0 | - | 4.37 | 56,366 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,929 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 65,565 |
| Random U.S. Vice President to President | 0 | - | 4.55 | 27,935 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 14,054 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 22,131 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,603 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,393 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 396,854 |
| People in Pictures with Barack Obama | 0 | - | 4.11 | 45,270 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.51 | 25,627 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,922 |
| The John Adams Presidency | 0 | - | 4.10 | 8,021 |
| The Theodore Roosevelt Presidency | 0 | - | 4.33 | 7,169 |
| U.S. Vice Presidential Trivia | 0 | - | 4.31 | 11,551 |
| Play-Doh Presidents | 0 | - | 5.00 | 75,768 |
| The George Washington Presidency | 0 | - | 4.02 | 13,689 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.34 | 10,728 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,894 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,591 |
| Vietnam War Countries | 0 | - | 4.81 | 86,841 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.41 | 281,336 |
| George Washington... or George W. Bush? | 0 | - | 4.14 | 11,421 |
| U.S. President Scramble | 0 | - | 4.37 | 91,770 |
| U.S. Senators by State | 0 | - | 4.49 | 36,414 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,646 |
| The Kennedy Family | 0 | - | 3.84 | 13,345 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,834 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 41,153 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,242 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,966 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.84 | 51,337 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 517,292 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.73 | 19,308 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 21,034 |
| The American Revolution | 0 | - | 4.51 | 51,909 |
| Six Flags Over Texas | 0 | - | 4.84 | 59,148 |
| United States Map Quiz | 0 | - | 4.98 | 3,922,239 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,998 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,739 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,722 |
| Harvard University | 0 | - | 4.15 | 7,764 |
| The Iraq War | 0 | - | 4.45 | 14,456 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 107,853 |
| Rust Belt Cities Map Quiz | 0 | - | 4.56 | 32,463 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,615 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.69 | 74,384 |
| Presidential Actors | 0 | - | 4.33 | 17,902 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 60,558 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 50,912 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 77,759 |
| Countries of the Soviet Union | 0 | - | 4.98 | 185,671 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 100,334 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,677 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,272 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.84 | 34,221 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 65,977 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 70,495 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,265 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,614 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,708 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,912 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,131 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,422 |
| Cities and Towns of Massachusetts | 0 | - | 4.90 | 61,483 |
| US States Quiz | 0 | - | 5.00 | 14,896,478 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 341,962 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 135,054 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 63,908 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 50,441 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 59,680 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 47,132 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,979 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 128,155 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.89 | 51,775 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 94,663 |
| Countries of Iberia in History with a Map | 0 | - | 4.82 | 34,631 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.96 | 76,557 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 101,486 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 55,408 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,546 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.85 | 48,494 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 94,609 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,881 |
| Total United States Immigration by Country | 0 | - | 4.89 | 97,518 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 148,370 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 187,372 |
| Pixelated United States Map | 0 | - | 4.90 | 83,023 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 94,496 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 79,648 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,394 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,933 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,739 |
| Las Vegas Casinos Quiz | 0 | - | 4.07 | 36,545 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.85 | 22,164 |
| U.S. History for Dummies | 0 | - | 4.50 | 65,937 |
| U.S. Civil War Decoder | 0 | - | 4.17 | 24,175 |
| The 13 Colonies Quiz | 0 | - | 4.96 | 101,325 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 97,126 |
| 10 Southernmost U.S. States | 0 | - | 4.85 | 100,200 |
| U.S. States with Short Names | 0 | - | 4.87 | 131,246 |
| U.S. States that Start with M | 0 | - | 4.91 | 151,816 |
| U.S. States By Population | 0 | - | 4.90 | 130,935 |
| U.S. States that Start with N | 0 | - | 4.95 | 156,437 |
| U.S. States with Longest Names | 0 | - | 4.85 | 36,489 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 74,447 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 78,503 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,750 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,679 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 146,331 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 168,467 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,547 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 68,971 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,931 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 465,884 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 223,479 |
| Vatican City Country Quiz | 0 | - | 4.50 | 39,715 |
| Most-Visited Countries by Popes | 0 | - | 4.63 | 77,091 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 61,341 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 72,512 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 88,308 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 78,785 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,269 |
| Rivers of the United States | 0 | - | 4.92 | 57,600 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 278,725 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 125,570 |
| Countries that Beat the United States | 0 | - | 4.92 | 147,176 |
| American Revolution Decoder | 0 | - | 4.12 | 20,066 |
| Countries Closest to Alaska | 0 | - | 4.92 | 99,908 |
| California A-Z | 0 | - | 4.48 | 27,881 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.32 | 42,368 |
| Countries Closest to Maine | 0 | - | 4.85 | 59,558 |
| The American Civil War | 0 | - | 4.63 | 49,320 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 462,227 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,899 |
| US States with an Empty Map | 0 | - | 5.00 | 559,528 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 186,541 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 38,720 |
| Draw All US State Borders | 0 | - | 4.99 | 96,058 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 101,196 |
| Top 10 Hottest U.S. States | 0 | - | 4.83 | 101,719 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 72,035 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 90,351 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,875 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,333 |
| Merged U.S. States | 0 | - | 4.40 | 40,628 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 72,270 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 116,826 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 153,992 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 89,964 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,602 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 402,526 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,815 |
| The Persian Gulf War | 0 | - | 4.00 | 7,745 |
| The Vietnam War | 0 | - | 4.41 | 33,049 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,817 |
| Random American Countries on a Map | 0 | - | 4.96 | 87,176 |
| South America Flags Map Quiz | 0 | - | 4.95 | 72,151 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 165,033 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,134 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,410 |
| History of Florida | 0 | - | 4.44 | 8,782 |
| The Life of Martin Luther King Jr. | 0 | - | 4.80 | 10,416 |
| Hawaiian Islands | 0 | - | 4.85 | 38,696 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 21,173 |
| Boston Red Sox Trivia | 0 | - | 4.12 | 6,802 |
| New York Yankees Trivia | 0 | - | 4.36 | 6,132 |
| History of Texas | 0 | - | 4.41 | 13,554 |
| U.S. States that Border Tennessee | 0 | - | 4.84 | 57,990 |
| American History Quotes #1 | 0 | - | 4.40 | 91,799 |
| People on Money - United States | 0 | - | 4.31 | 61,902 |
| American History Quotes #2 | 0 | - | 4.38 | 39,376 |
| Old West History | 0 | - | 4.28 | 14,810 |
| U.S. History Groups of Two | 0 | - | 4.28 | 35,541 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,505 |
| Life of Benjamin Franklin | 0 | - | 4.20 | 6,236 |
| American Revolution - Multiple Choice | 0 | - | 4.32 | 18,898 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,373 |
| Last Names in U.S. History #2 | 0 | - | 4.42 | 16,098 |
| Fifty US States in One Minute | 0 | - | 4.57 | 3,270,771 |
| U.S. State Flags | 0 | - | 4.87 | 138,828 |
| U.S. States that Border Canada | 0 | - | 4.90 | 166,474 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 196,554 |
| Cartoon Versions of U.S. States | 0 | - | 4.82 | 52,745 |
| U.S. State Birds Quiz | 0 | - | 4.35 | 20,617 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,331 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 52,315 |
